User:Mr. Ibrahem/Surface epithelial-stromal tumor

Surface epithelial-stromal tumors are a category of ovarian tumors. They account for about 66% of ovarian tumors and 90% of ovarian cancers. Symptoms may include a pelvic mass. Complications may include peritoneal carcinomatosis.

Types include serous tumors, mucinous tumors, endometrioid tumors, clear cell tumors, transitional cell tumors, and epithelial-stromal such as carcinosarcoma. Serous tumors make up about 30%, mucinous about 13%, and endometroid about 3% of ovarian tumors. They can be further classified as benign (60%), borderline (5%), or malignant (35%). Some malignant versions are known as ovarian adenocarcinomas.

Risk factors include not having children, high fat diet, family history, and late menopause. A tubal ligation and the use of birth control pills decreases the risk. They are believed to start from the ovarian surface epithelium, endometrium or fallopian tubes. Diagnosis is often suspected based on medical imaging and confirmed by microscopic examination.